Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) narrates: I asked the Prophet (peace and blessings be upon him) about this statement of Allah Almighty (Allah Almighty says): "Those who are heedless of their prayers." The Prophet (peace and blessings be upon him) said: It refers to those who do not perform the prayers in their appointed times.
Al-Tabarani recorded it in al-Mu'jam al-Awsat; its chain contains Ikrimah bin Ibrahim, who is extremely da'if (weak). Various chains of this narration have already appeared in the chapter on prayer.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التفسير / 11524